Villa Criss-Cross Envelope By OFIS Architects

Diagonal crosses act as a functional and graphic representation

Project Specs


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Appreciation towards OFIS Architects for providing the following description:

这座别墅位于斯洛文尼亚卢布尔雅那市中心的Mirje Suburbs。别墅所在的街道垂直于古罗马墙,并延伸至Plecnik设计的石头金字塔(作为他沿城墙进行的改建项目的一部分)下方的一条步行通道。别墅的新体量被嵌入街边既有的挡土墙内。通过将墙壁合并为新建筑的一部分,新的住宅保留了其在街道上与金字塔轴向对齐的原有位置。

The Villa is located in the Mirje Suburbs within the city center of Ljubljana, Slovenia. The street of the villa runs perpendicular to the ancient Roman Wall and continues into a pedestrian passageway under the stone pyramid designed by Plecnik (as part his reconstruction project along the wall). The Villa’s new structure embeds an existing retaining wall along the street front. By incorporating the wall as part of the new construction, the new house keeps original position on this street in an axial alignment to the pyramid.

▼别墅外观,an external view of the villa


The external structure is composed of a cube volume and perforated metal envelope. The volume extracts cut-outs to create pockets of space that provide a pyramidical stepping down along the roof, a void along the entrance and private glass patios with terraces for living areas of the house. Using a material with holes on both sides aims to make an abstract interpretation of the texture of classical villas in the historical suburb. The rough classical façade was represented with double perforated panels; the task was to achieve texture through the illusion of depth which allows a light presence and enhances the shadows and reflections off a palette of beige tints. The three-dimensional texture creates a dynamic abstraction while encapsulating its coherent volume. Diagonal crosses act as a functional and graphic representation. The crosses brace the frames of panels and create identity like façade ornaments on historical citizen villas.

▼入口处的口袋空间,the volume extracts cut-outs to create pockets of space

▼立体的纹理创造出动态的抽象感,the three-dimensional texture creates a dynamic abstraction while encapsulating its coherent volume


▼十字结构为板材的框架带来支撑,the crosses brace the frames of panels



The internal volume embodies two elements: exposed structural concrete walls and a wooden shell. The project required a residence for a single family with three children. The brief was to maximize living area with minimum of the service space. The concept divides space based on distinct program by separating function not by walls but floor levels: ground floor is living/communal space, first floor is children area and second floor parents area. With no cellar, the shell is integral to provide all of the space for storage. The flush walls fold out to house cupboards, shelves and drawers throughout the living areas and furniture such as beds, seating and counters are built into the floor in order to optimize space and provide easy maintenance. This connects different spaces in the house by giving a common function to partitions.

▼公共空间位于首层,ground floor is living and communal space

▼床等家具直接嵌于地面,furniture such as beds are built into the floor

▼木制核心筒足以提供所有的存放空间, the wooden shell is integral to provide all of the space for storage

▼楼梯间, the stair well

▼一至二层的楼梯,staircase between ground and first floor


▼木制核心筒中的楼梯,staircase covered by a wooden shell

▼设计概念图,design concept




▼外墙分析图,diagram of the envelope

▼总平面图,site plan

▼首层平面图,ground floor plan

▼二层平面图,first floor plan

▼三层平面图,second floor plan

▼屋顶平面图,roof plan


▼结构细部,construction details


project: Villa Criss-Cross Envelope
location: Ljubljana, Slovenia
program: residential
client: private
type:single family house
status:project 2012, construction start 2013, completion 2015
area: 340 m2
photo: Tomaz Gregoric
project team
Rok Oman, Spela Videcnik, Tomaz Gregoric
Janez Martincic, Andrej Gregoric, Jan Celeda, Tanja Veselic,
Carlos García-Almonacid, Dani Kaludjerovic, Will Gibson, Marija Barovic, Jamie Lee, Polina Isyanyulova, Daniel Muniz Domínguez, Nika Zufic, Marta Vela, Aubin Gastineau, Catarina Cristovinho, Maria Trnovska, Estefanía Lopez Tornay, Jolien Maes, Katarina Lampic, Sabrina Cep, Jade Manbodh, Elisa Ribilotta, Maria Della Mea, Lukasz Czech,
Istvan Jenei, Dora Kljenak, Marko Gusic
technical team
Structural engineering: IB TECHNO, Gravitas
Mechanical engineering: Vavtar engineering
Electrical engineering: Eurolux
Lighting design: Arcadia lightwear
Interior carpentry: Permiz
Facade and windows contractor: Domal
Main construction contractor: G&A

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